[TYPO3] More templates

[Livius Agrippa]

Hi,

I tried to create multiple templates for the same page. But the second 
template doesn't work properly. How can I implement the second template? 
Because when I tried to switch to the second template nothing happens 
and it appears in the FE an error "ERROR! No template found".
Or is it not possible to have 2 templates in same page?

Best regards;
Livius